canvas {
    position: absolute;
    top: 0;
    left: 0;
    z-index: -9999;
}

/*nav区域aaaaaaaaaaaaaaaaaaa*/

.nav {
    height: 56px;
    padding: 8px 0 8px 0;
    background-image: linear-gradient(to left bottom, #a18cd1, rgba(54, 162, 235, 0.4));
}

.container-fluid {
    width: 1340px;
    height: 40px;
    padding: 0 12px 0 12px;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
}

.logo {
    width: 79px;
    height: 40px;
    font-size: 12px;
}

.collapse.navbar-collapse {
    width: 1227px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/*3333333333333333333*/
.navbar-nav {
    width: 750px;
    height: 40px;
    display: flex;
}

.nav-item {
    position: relative;
    padding: 8px 12px 8px 12px;
    margin-right: 10px;
}

/*dropdown*/
.dropdown.dropdown {
    width: 100px;
    line-height: 40px;
    text-align: center;
    transition: all .3s;
    z-index: 1000;
}

.dropdown.dropdown ul li {
    width: 100px;
    text-align: center;
    height: 0;
    transition: .4s;
    opacity: 0;
    transform: translateY(-65px);
}

.dropdown.dropdown:hover li {
    height: 40px;
    opacity: 1;
    transform: translateY(0);
}

/*0000000000000000000000000000000000000000000000000000000*/
.nav-search {
    width: 288px;
    height: 38px;
    display: flex;
    justify-content: space-between;
}

.nav-search input {
    width: 203px;
    height: 37px;
    border: 1px solid #ced4da;
    cursor: text;
    font-size: 16px;
    background: transparent;
    padding: 6px 12px;
    border-radius: 5px;
    transition: all .3s;
}


.nav-search input:focus {
    color: #212529;
    border-color: #86b7fe;
    outline: 0;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.nav-search input::placeholder {
    font-size: 16px;
    /*color: #666;*/
}

.nav-search .btn-search {
    width: 76.53px;
    height: 37.6px;
    font-size: 17px;
    color: #198754;
    font-weight: 350;
    border: 1px solid #198754;
    border-radius: 6px;
    /*background-color: #f3f5f7;*/
    background-image: linear-gradient(to left bottom, #a18cd1, rgba(54, 162, 235, 0.8));

}

.nav-search .btn-search:hover {
    color: #fff;
    background-color: #198754;
    transition: all .3s;
}

/*4444444444444444444*/
.nav-user {
    width: 297px;
    height: 40px;
    line-height: 40px;
}

.nav-user > ul li > img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.nav-user > ul {
    display: flex;
    justify-content: space-evenly;
}

.nav-user > ul li.dropdown {
    width: 200px;
}

.nav-user > ul li.dropdown.dropdown ul li {
    width: 200px;
}


/*footer区域cccccccccccccccccccc*/

.footer {
    margin-top: 20px;
    /*background: #262f38;*/
    overflow: hidden;
}

.footer_links {
    text-align: center;
    margin-top: 20px;
}

.footer_links span {
    margin: 0 5px;
}

.footer_links a,
.footer_links span {
    color: #000;
    font-size: 14px;
}

.copyright {
    text-align: center;
    font-size: 13px;
    color: #000;
    line-height: 26px;
    margin-top: 9px;
    margin-bottom: 20px;
}

.footer a:hover {
    color: #59b7a7;
}